Question

Phosphorus can be prepared from calcium phosphate by the following reaction: 2Ca3(PO4) 2(s) + 6SiO2(s) + 10C(s) → 6CaSiO3(s) + P4(s) + 10CO(g) Phosphorite is a mineral that contains Ca3(PO4)2 plus other non- phosphorus- containing compounds. What is the maximum amount of P4 that can be produced from 1.0 kg of phosphorite if the phosphorite sample is 75% Ca3(PO4) 2 by mass? Assume an excess of the other reactants.